/*
var str1 = '1';
var str2 = new String(1);
var str3 = String(1)
console.log(str2,typeof str2);
console.log(str3,typeof str3)
console.log(str1+2);
console.log(str2+2);

var str ="dw\'dw"
console.log(str)
var str2 = 'a\nd'
console.log(str2)
var str3 = '"a\tb"'
console.log(str3)
*/console.log("'c:\\users\\web'")
var str = '涛哥正在完dangaang '
console,log(str.length)



